What kind of welder should I buy?

[Mark Gendron <markge@MICROSOFT.com>]

I need to get back to work on my TR2, and I have lots of panel welding
to do. I expect to buy a MIG welder of some sort. Any recommendations on
brands, or brands to avoid? Is there any significant advantage to 220v
over 110v? I'm willing to wire my garage for 220v if I can get better
welds that way (or if welding will be easier). 

Thanks
-mg